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Table 1 Specifications of the ITAG and some comparison tools

From: ITAG: an eco-sensor for fine-scale behavioral measurements of soft-bodied marine invertebrates

   ITAG MiniPat Daily Diary Little Leonardo
  Sensors Pressure (depth), temperature, light, 3-axis accelerometer, 3-axis magnetometer Pressure (depth), temperature, light Pressure (depth), temperature, light, 3-axis accelerometer, 3-axis magnetometer, Speed Pressure (depth), temperature, 3-axis accelerometer, 3-axis magnetometer, speed
Size Length (mm) 108.4 115   175
Width (mm) 64 38   26
Height (mm) 28.7    
Weight (g) in air 102.5 57   175
  Includes floatation Yes—syntactic foam Yes No No
  Attachment type Variable base (suction cups, sewn on or defined by user) Towed from tether and anchor Defined by user Defined by user
  Timed release Yes Yes Yes Yes
  Battery type Li-ion AA 2 AA  
  Re-useable design Yes No No  
  Memory 32 MB 16 MB 1 GB 64 MB
Depth Max 1000 1700 2000 1000
Resolution (m) 0.03 0.5 0.5  
Accuracy ±1 % ±1 % of reading Accuracy: ±1 % of reading  
Sample rate (Hz) 200   32 ca. 0039
Temperature Range −5 to 40 °C −40 to 60 °C Range: −40 °C to +60 °C  
Resolution 0.01 °C 0.05 °C Resolution: 0.05 °C  
Accuracy 0.5 °C ±0.1 °C Accuracy: ±0.1 °C ca. 0039
Sample rate 200    
Light sensor Range Variable dynamic range (typically 0.8 Ω/Lux) 5 × 10−12 to 5 × 10−2 W cm−2 Range: 5 × 10−10 W cm−2 to 5 × 10−2 W cm−2 (eight decades) N/A
Max sample rate (Hz) 200   32 N/A
Wavelength range 400–700 nm unk 470 nm N/A
Accelerometer Range ±2 g N/A ±2 g (−20 m/s/s to 20 m/s/s)  
Resolution 0.01 mg N/A 0.05 m/s/s  
Max sample rate (Hz) 200 N/A 32 32
Magnetometer Max sample rate (Hz) 200 N/A 32 32
  1. Unaddressed cells reflect the information was not found online